There is one single piece shape. Sure they vary enough that you can't fit anything but the correct piece together for most of them, but they are all the same basic shape.

I did not know I was buying a torture device for my wife. Putting together all of the red pieces that look exactly the same is a lesson in trial and error. There needs to either be a continuous shade change across the background or a pattern or something. It currently sits with the message and everything that isn't red together. And we can slowly add a single red piece after trying for 20 minutes.

It is just frustrating.

There is also an issue with the die used to cut out the puzzle. There are many pieces that delaminated when ripped apart but the packers. So many pieces have a layer of cardboard that ripped off the adjacent piece.

All in all, not a great purchase for the money. I wouldn't buy it again.